/*
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* The contents of this file are subject to the terms of the Common Development and
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* Distribution License (the License). You may not use this file except in compliance with the
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* License.
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*
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* You can obtain a copy of the License at legal/CDDLv1.0.txt. See the License for the
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* specific language governing permission and limitations under the License.
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*
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* When distributing Covered Software, include this CDDL Header Notice in each file and include
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* the License file at legal/CDDLv1.0.txt. If applicable, add the following below the CDDL
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* Header, with the fields enclosed by brackets [] replaced by your own identifying
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* information: "Portions Copyright [year] [name of copyright owner]".
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*
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* Copyright 2006-2009 Sun Microsystems, Inc.
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* Portions Copyright 2013-2016 ForgeRock AS.
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*/
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package org.opends.server.tools;
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import java.io.*;
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import org.forgerock.i18n.LocalizableMessage;
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import org.opends.server.core.DirectoryServer;
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import org.opends.server.loggers.JDKLogging;
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import org.opends.server.types.NullOutputStream;
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import com.forgerock.opendj.cli.*;
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import static org.opends.messages.CoreMessages.*;
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import static org.opends.messages.ToolMessages.*;
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import static org.opends.server.util.StaticUtils.*;
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import static com.forgerock.opendj.cli.Utils.filterExitCode;
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import static com.forgerock.opendj.cli.CommonArguments.*;
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/**
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* This program provides a simple tool that will wait for a specified file to be
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* deleted before exiting. It can be used in the process of confirming that the
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* server has completed its startup or shutdown process.
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*/
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public class WaitForFileDelete extends ConsoleApplication
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{
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/**
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* The fully-qualified name of this class.
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*/
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private static final String CLASS_NAME =
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"org.opends.server.tools.WaitForFileDelete";
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/**
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* The exit code value that will be used if the target file is deleted
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* successfully.
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*/
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public static final int EXIT_CODE_SUCCESS = 0;
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/**
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* The exit code value that will be used if an internal error occurs within
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* this program.
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*/
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public static final int EXIT_CODE_INTERNAL_ERROR = 1;
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/**
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* The exit code value that will be used if a timeout occurs while waiting for
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* the file to be removed.
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*/
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public static final int EXIT_CODE_TIMEOUT = 2;
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/**
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* Constructor for the WaitForFileDelete object.
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*
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* @param out the print stream to use for standard output.
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* @param err the print stream to use for standard error.
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* @param in the input stream to use for standard input.
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*/
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public WaitForFileDelete(PrintStream out, PrintStream err, InputStream in)
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{
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super(out, err);
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}
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/**
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* Processes the command-line arguments and initiates the process of waiting
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* for the file to be removed.
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*
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* @param args The command-line arguments provided to this program.
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*/
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public static void main(String[] args)
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{
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int retCode = mainCLI(args, true, System.out, System.err, System.in);
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System.exit(retCode);
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}
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/**
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* Processes the command-line arguments and initiates the process of waiting
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* for the file to be removed.
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*
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* @param args The command-line arguments provided to this
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* program.
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* @param initializeServer Indicates whether to initialize the server.
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* @param outStream The output stream to use for standard output, or
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* <CODE>null</CODE> if standard output is not
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* needed.
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* @param errStream The output stream to use for standard error, or
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* <CODE>null</CODE> if standard error is not
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* needed.
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* @param inStream The input stream to use for standard input.
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* @return The error code.
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*/
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public static int mainCLI(String[] args, boolean initializeServer,
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OutputStream outStream, OutputStream errStream, InputStream inStream)
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{
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int exitCode;
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PrintStream out = NullOutputStream.wrapOrNullStream(outStream);
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PrintStream err = NullOutputStream.wrapOrNullStream(errStream);
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JDKLogging.disableLogging();
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try
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{
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WaitForFileDelete wffd = new WaitForFileDelete(out, err, System.in);
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exitCode = wffd.mainWait(args);
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if (exitCode != EXIT_CODE_SUCCESS)
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{
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exitCode = filterExitCode(exitCode);
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}
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}
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catch (Exception e)
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{
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e.printStackTrace();
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exitCode = EXIT_CODE_INTERNAL_ERROR;
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}
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return exitCode;
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}
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/**
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* Processes the command-line arguments and then waits for the specified file
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* to be removed.
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*
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* @param args The command-line arguments provided to this program.
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* @param out The output stream to use for standard output, or
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* <CODE>null</CODE> if standard output is not
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* needed.
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* @param err The output stream to use for standard error, or
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* <CODE>null</CODE> if standard error is not
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* needed.
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* @param inStream The input stream to use for standard input.
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*
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* @return An integer value of zero if the file was deleted successfully, or
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* some other value if a problem occurred.
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*/
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private int mainWait(String[] args)
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{
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// Create all of the command-line arguments for this program.
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final BooleanArgument showUsage;
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final IntegerArgument timeout;
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final StringArgument logFilePath;
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final StringArgument targetFilePath;
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final StringArgument outputFilePath;
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final BooleanArgument quietMode;
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LocalizableMessage toolDescription = INFO_WAIT4DEL_TOOL_DESCRIPTION.get();
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ArgumentParser argParser = new ArgumentParser(CLASS_NAME, toolDescription,
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false);
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try
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{
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targetFilePath =
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StringArgument.builder("targetFile")
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.shortIdentifier('f')
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.description(INFO_WAIT4DEL_DESCRIPTION_TARGET_FILE.get())
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.required()
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.valuePlaceholder(INFO_PATH_PLACEHOLDER.get())
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.buildAndAddToParser(argParser);
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logFilePath =
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StringArgument.builder("logFile")
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.shortIdentifier('l')
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.description(INFO_WAIT4DEL_DESCRIPTION_LOG_FILE.get())
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.valuePlaceholder(INFO_PATH_PLACEHOLDER.get())
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.buildAndAddToParser(argParser);
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outputFilePath =
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StringArgument.builder("outputFile")
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.shortIdentifier('o')
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.description(INFO_WAIT4DEL_DESCRIPTION_OUTPUT_FILE.get())
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.valuePlaceholder(INFO_PATH_PLACEHOLDER.get())
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.buildAndAddToParser(argParser);
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timeout =
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IntegerArgument.builder("timeout")
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.shortIdentifier('t')
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.description(INFO_WAIT4DEL_DESCRIPTION_TIMEOUT.get())
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.required()
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.lowerBound(0)
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.defaultValue(DirectoryServer.DEFAULT_TIMEOUT)
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.valuePlaceholder(INFO_SECONDS_PLACEHOLDER.get())
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.buildAndAddToParser(argParser);
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// Not used in this class, but required by the start-ds script (see issue #3814)
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BooleanArgument.builder("useLastKnownGoodConfig")
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.shortIdentifier('L')
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.description(INFO_DSCORE_DESCRIPTION_LASTKNOWNGOODCFG.get())
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.buildAndAddToParser(argParser);
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// Not used in this class, but required by the start-ds script (see issue #3814)
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quietMode = quietArgument();
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argParser.addArgument(quietMode);
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showUsage = showUsageArgument();
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argParser.addArgument(showUsage);
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argParser.setUsageArgument(showUsage);
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}
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catch (ArgumentException ae)
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{
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LocalizableMessage message = ERR_CANNOT_INITIALIZE_ARGS.get(ae.getMessage());
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println(message);
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return EXIT_CODE_INTERNAL_ERROR;
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}
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// Parse the command-line arguments provided to the program.
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try
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{
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argParser.parseArguments(args);
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}
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catch (ArgumentException ae)
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{
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argParser.displayMessageAndUsageReference(getErrStream(), ERR_ERROR_PARSING_ARGS.get(ae.getMessage()));
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return EXIT_CODE_INTERNAL_ERROR;
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}
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// If we should just display usage or version information,
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// then print it and exit.
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if (argParser.usageOrVersionDisplayed())
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{
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return EXIT_CODE_SUCCESS;
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}
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// Get the file to watch. If it doesn't exist now, then exit immediately.
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File targetFile = new File(targetFilePath.getValue());
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if (! targetFile.exists())
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{
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return EXIT_CODE_SUCCESS;
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}
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// If a log file was specified, then open it.
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long logFileOffset = 0L;
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RandomAccessFile logFile = null;
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if (logFilePath.isPresent())
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{
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try
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{
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File f = new File(logFilePath.getValue());
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if (f.exists())
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{
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logFile = new RandomAccessFile(f, "r");
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logFileOffset = logFile.length();
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logFile.seek(logFileOffset);
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}
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}
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catch (Exception e)
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{
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println(WARN_WAIT4DEL_CANNOT_OPEN_LOG_FILE.get(logFilePath.getValue(), e));
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logFile = null;
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}
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}
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// If an output file was specified and we could open the log file, open it
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// and append data to it.
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RandomAccessFile outputFile = null;
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long outputFileOffset = 0L;
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if (logFile != null && outputFilePath.isPresent())
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{
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try
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{
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File f = new File(outputFilePath.getValue());
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if (f.exists())
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{
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outputFile = new RandomAccessFile(f, "rw");
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outputFileOffset = outputFile.length();
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outputFile.seek(outputFileOffset);
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}
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}
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catch (Exception e)
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{
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println(WARN_WAIT4DEL_CANNOT_OPEN_OUTPUT_FILE.get(outputFilePath.getValue(), e));
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outputFile = null;
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}
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}
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// Figure out when to stop waiting.
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long stopWaitingTime;
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try
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{
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long timeoutMillis = 1000L * Integer.parseInt(timeout.getValue());
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if (timeoutMillis > 0)
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{
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stopWaitingTime = System.currentTimeMillis() + timeoutMillis;
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}
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else
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{
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stopWaitingTime = Long.MAX_VALUE;
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}
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}
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catch (Exception e)
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{
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// This shouldn't happen, but if it does then ignore it.
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stopWaitingTime = System.currentTimeMillis() + 60000;
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}
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// Operate in a loop, printing out any applicable log messages and waiting
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// for the target file to be removed.
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byte[] logBuffer = new byte[8192];
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while (System.currentTimeMillis() < stopWaitingTime)
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{
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if (logFile != null)
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{
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try
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{
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while (logFile.length() > logFileOffset)
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{
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int bytesRead = logFile.read(logBuffer);
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if (bytesRead > 0)
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{
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if (outputFile == null)
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{
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getOutputStream().write(logBuffer, 0, bytesRead);
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getOutputStream().flush();
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}
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else
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{
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// Write on the file.
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// TODO
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outputFile.write(logBuffer, 0, bytesRead);
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}
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logFileOffset += bytesRead;
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}
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}
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}
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catch (Exception e)
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{
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// We'll just ignore this.
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}
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}
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if (! targetFile.exists())
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{
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break;
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}
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else
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{
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try
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{
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Thread.sleep(10);
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} catch (InterruptedException ie) {}
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}
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}
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close(outputFile);
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if (targetFile.exists())
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{
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println(ERR_TIMEOUT_DURING_STARTUP.get(
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Integer.parseInt(timeout.getValue()),
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timeout.getLongIdentifier()));
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return EXIT_CODE_TIMEOUT;
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}
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else
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{
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return EXIT_CODE_SUCCESS;
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}
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}
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/** {@inheritDoc} */
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@Override
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public boolean isAdvancedMode()
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{
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return false;
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}
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/** {@inheritDoc} */
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@Override
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public boolean isInteractive()
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{
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return false;
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}
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/** {@inheritDoc} */
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@Override
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public boolean isMenuDrivenMode()
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{
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return false;
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}
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/** {@inheritDoc} */
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@Override
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public boolean isQuiet()
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{
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return false;
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}
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/** {@inheritDoc} */
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@Override
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public boolean isScriptFriendly()
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{
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return false;
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}
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/** {@inheritDoc} */
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@Override
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public boolean isVerbose()
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{
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return false;
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}
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}
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